Home / 1,359.29-2,038.60-434.65

Finding the Fourth Proportional to 1,359.29, 2,038.60 and 434.65

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Solution

The fourth proportional to 1,359.29, 2,038.60 and 434.65 is: 651.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.29 : 2,038.60 = 434.65 : x
  2. Step 2: Convert to fraction form
    1,359.29/2,038.60 = 434.65/x
  3. Step 3: Cross multiply
    1,359.29x = 2,038.60 × 434.65
  4. Step 4: Simplify right side
    1,359.29x = 886,084.44
  5. Step 5: Solve for x
    x = 886,084.44/1,359.29
  6. Step 6: Final answer
    x = 651.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.